Transdimensional Marketing

Chapter 209 The Romance of That Black Hole (Part 1)

From the moment he stepped out of the portal, a gravitational force that Chen Yu couldn't detect but actually existed dragged him forward.

But as he activated the quantum engine, that drag force was immediately counteracted.

According to the data in the helmet, my current speed is 1020 meters per second, and the black hole 7,000 kilometers away will not pose a threat to me at all. And the engine pressure is only 75% at this time, that is to say, even if I go a little further distance, I can easily escape.

But for the sake of safety, let's set it at this limit, and don't let it go.

With that said, Chen Yu increased the engine pressure by 10%, and flew in one direction at a slow speed.

According to common sense, black holes without accretion disks are indeed invisible. But I have a method that allows everyone to observe the existence of black holes with their own eyes.

It's just that such a method needs to find a special angle.

Then before looking for this angle, by the way, explain to the audience in front of the screen who don't know much about astronomy what a black hole is.

Facing the camera, Chen Yu recalled the copy he had memorized in advance, and spoke slowly: A black hole, in simple terms, is the product of a mass of matter compressed to the extreme.

A cat, when squeezed by a hydraulic press, will become very thin. If there is a magical hydraulic press that can compress this cat to a few nanometers, crushing every molecule of its hair, flesh, bones, and nerves into Atoms, crushing atoms into neutrons, finally crushing neutrons...

None of the neutrons that make up the cat are there, but its weight is there.

So, this cat becomes a black hole with infinite mass.

[Cat: Meow? 】

[Terrible metaphor. 】

[True and easy to understand. 】

[My husband has a lot of knowledge! 】

[Husband is so big! 】

[Really big +1]

[I understand the truth, that is, where can I buy this hydraulic machine? 】

[Have you all forgotten that the theme of this live broadcast is human disaster? 】

【I haven't forgotten, but I just want to call 666...】

【6666...】

His hands were covered by armor, so Chen Yu couldn't see the audience's barrage, so he continued to explain on his own.

Of course, it is impossible for a cat to collapse into a black hole. In the universe, only stars, such as the sun, can collapse into a black hole.

If our sun is dozens of times larger and becomes a super-large star, after its internal nuclear fusion fuel is exhausted, the huge outer shell will collapse inward, and under the drag of gravity, it will crush molecules and atoms. , neutrons... eventually become a black hole.

This is where most of the black holes in the universe come from.

Chen Yu's voice paused for a moment, waiting for the audience to digest, and then said: Many people will wonder how this kind of thing was discovered by humans? This has to mention one of the two thighs of human civilization - Einstein .”

In 1916, Einstein officially published the theory of relativity, and the whole world knelt down and worshiped. At this time, the astronomer Schwarzschild held the theory of relativity, and when he calculated the gravitational field equation, he got a 'vacuum solution'. This solution shows that, If you gather a lot of matter at a point, there will be an event horizon around that point. And once you enter the event interface, nothing can escape, including light.

The incredible celestial body that exists in this theory is called a black hole by physicist Wheeler.

Its existence was completely beyond the understanding of the academic community at the time, and many scholars were unwilling to believe it. But Einstein's general theory of relativity has been verified. Unless the theory of relativity is wrong, black holes must exist.

Everyone knows what happened afterwards.

Chen Yu gave a thumbs up: Through gravitational redshift and gravitational lensing, black holes are proved.

[666! 】

【6666...】

[Young and don't work hard, boss 666. 】

【Eye-opener. 】

[Einstein's father's thighs are really thick. 】

Black holes are terrifying. Chen Yu glanced at the changes in the gravitational value in the helmet, and said seriously: As long as you enter that visual interface, you will be torn apart by the terrifying gravitational force at the atomic level, leaving only pure energy. Can't live.

Well... I will briefly talk about the origin and history of black holes here. I am not far from that 'point'. Taking advantage of the last time, I will tell you something interesting.

A black hole has only three basic quantities. Mass, angular momentum, and charge. Mass is weight, angular momentum is rotation, and charge is whether the black hole is charged.

So in academia, referring to these three basic quantities, black holes will be divided into four properties in the form of Cartesian product according to whether they are rotating or charged: Schwarzschild black holes, R-N black holes, Kerr black holes, Cole-Newman black holes

But this kind of classification is too professional, and some audiences can't understand it. I will use the perspective of an 'ordinary person' and simply classify it by size.

After all, Chen Yu pointed at the camera and stretched out three fingers.

Small black holes, star-level black holes, super-large black holes!

Let's talk about the super-massive black hole first. The mass is beyond imagination. It can even drive a galaxy to rotate. For example, the Sagittarius A black hole in the middle of the Milky Way has the mass of the sun. Note that it is not the earth, it is 4.3 million times that of the sun!

The Andromeda galaxy next door to the Milky Way has a central black hole with a mass 33 million times that of the sun!

The straw hat galaxy, the central black hole, one billion twenty million times!

The black hole we saw on the photo last year, the central black hole of M87, is 6.5 billion times larger.

Ton 618, 66.6 billion times the mass of the sun, the diameter of Schwarzschild alone is 384 billion kilometers...

After the words fell, Chen Yu couldn't help sighing: This is the universe. The more you understand it, the more you realize how small you are.

As for the stellar black hole, what I said before is that the black hole formed by the collapse of a star is generally about dozens of times the mass of the sun. Skip it.

And the black hole that broke into our solar system is a small primordial black hole. The mass is only 125 times that of the earth, and it collapsed during the big bang period when the matter was extremely dense.

According to the theory of Hawking radiation, a formed black hole slowly radiates particles outward. If there is no food to eat, the black hole will evaporate, leaving only a permanent, Prandtl length remnant. But this process is quite long.

That is to say, the hole 7,000 kilometers away from me is already 13.7 billion years old. It witnessed the moment of the Big Bang.

【Shock...】

[Compared to the universe, the earth is like a bacterium. 】

[The ancients thought that the universe revolved around the earth. 】

[I have been paying attention to the anchor since the first evaluation, and I know a lot! admire! Awesome! 】

[Awesome ass! Don’t know what copywriting is? 】

[CNM! The anchor has no copywriting, so he is awesome! 】

[The anchor is awesome! 】

【Awesome +1】

[Do you know how hard my anchor works? 】

[For a while, I couldn't tell if it was black or pink...]

arrive.

After continuing to fly for another five minutes, Chen Yu's body suddenly stopped, and he opened his arms: This is the position.

It is well known that not even light can escape from the gravitational pull of a black hole. But what about those rays that are close to beyond the black hole's event horizon?

It will be distorted.

This phenomenon is called gravitational lensing.

Then let's make a bold assumption...

If you looked at the sun through a black hole... what would happen?

Chen Yu clasped his hands together, and his tone gradually became excited: The light in the middle will disappear, and the light in the four circles will be distorted. In this way, we can see the existence of black holes with our own eyes through the distortion of light!

The gravitational force that can absorb light particles has just become the culprit for exposing it!

[Fuck? ! 】

[It seems to make sense...]

[The legendary Einstein ring! 】

【God's thoughts...】

[It's crazy. 】

[Awesome! 】

【My mother asked me why I turned somersaults to watch the video. 】

【This wave of operations is really coquettish...】

【show. 】

[I was still thinking about how I could see it, it turned out to be like this...]

And my position is on a straight line beyond the black hole and the sun.